This is the wrong place as this is not a wordpress-related question (well, or the answer isn’t wordpress related), but here is what you do: Get all your files through HTTPS (especially extern files) or just download the extern files and host them on your webspace/server/cloudd. This isn’t only more efficient and resistant to unexpected downtimes, but also a big win in data privacy for your users.
It should also fix your “bug”, as it seems your superfish is not loading or can not be refered to.